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Finding the Fourth Proportional to 1,472.49, 2,209.11 and 432.53

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Solution

The fourth proportional to 1,472.49, 2,209.11 and 432.53 is: 648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.49 : 2,209.11 = 432.53 : x
  2. Step 2: Convert to fraction form
    1,472.49/2,209.11 = 432.53/x
  3. Step 3: Cross multiply
    1,472.49x = 2,209.11 × 432.53
  4. Step 4: Simplify right side
    1,472.49x = 955,500.68
  5. Step 5: Solve for x
    x = 955,500.68/1,472.49
  6. Step 6: Final answer
    x = 648.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.